I'm loving the JVM, it's not as good as the 2203 for all those typical 2203 tones (although it claims to be....but it's just a bit duller/more 2d than the real thing), but the high gain tones are awesome, I'm especially digging OD2 org atm.
the JVM is one of the best amps for lead tones also...BUT it's BY FAR the noisiest I've ever played, it's so noisy it's ridiculous
I was gonna say a boosted JCM800 or a modded one (since I knew you had one). Sounds good man, not my personal taste but very nice and chunky. I'd imagine blending it with a more saturated amp like an Uberschall or 5150 would sound quite nice.